NOTE - Portable Allegroserve has been maintained with patches recently, for compatibility with LispWorks, SBCL/Linux, and CCL. At some point it could use a refactoring for acl-compat to use now-defacto-standard libraries from Quicklisp (e.g. Bordeaux-threads), and to track the current original AllegroServe. But the current Portable AllegroServe is usable at least on the platforms mentioned.